2021 Toyota Mirai Service and Repair Manual

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Factory-Grade Data

2021 Toyota Mirai service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications, torque values, and reference data
  • Electrical diagnostics with full wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more
  • Diagnostic trouble codes and troubleshooting flow
  • Maintenance schedules and fluid capacities

Trims covered

  • Limited
  • XLE

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Maintenance & Lubrication
  • Specifications
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Diagnostic Trouble Codes
  • Technical Service Bulletins
  • Wiring Diagrams

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Vehicle Safety Data

2021 Toyota Mirai Recalls & Complaints

NHTSA #22V23900013/04/2022Component: ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE:SOFTWARE

Toyota Engineering & Manufacturing (Toyota) is recalling certain 2022 Lexus LX 600, Lexus NX 350h, Lexus NX 450h+, Toytoa RAV4 Hybrid, 2021-2022 Lexus LS 500h, Toyota Mirai, RAV4 PRIME, Sienna, Venza,

Consequence

Driving with a deactivated stability control system increases the risk of a crash.

Remedy

Dealers will update the Skid Control ECU software, free of charge. Owner notification letters were

TSB #11033403

TECHNICAL INSTRUCTIONS FOR 26TE03 ELECTRIC HEATER SUB-ASSEMBLY REPLACEMENT CERTAIN 2021 - 2024 MIRAI

TSB #11033404

Although the Mirai Electric Heater Assemblies are covered by Toyotas New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers ownership experience. Under this program, Toyota is

TSB #11028726

OBSOLETE NOTICE January 30, 2026: This bulletin is now obsolete. Please see T-SB-0001-26.

TSB #11028722

Some 2018 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software.

TSB #11028712

Some 2005 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The purpose of this Servic

TSB #11020657

The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and repairing refrigerant

TSB #11019332

To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be u

TSB #11018329

To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be u

Showing the 8 most recent of 119 technical service bulletins on file with NHTSA.

20240307Component: FUEL/PROPULSION SYSTEM

In 2021 I found a Toyota Mirai Hydrogen Fuel lease take over opportunity on [XXX] I saw the car in person and applied to take over the lease from Toyota Financial. A month and a half later I was able

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